A sizes attribute parser

Source/core/css/MediaValuesCached.h

Index: Source/core/css/MediaValuesCached.h
diff --git a/Source/core/css/MediaValuesCached.h b/Source/core/css/MediaValuesCached.h
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index 0000000000000000000000000000000000000000..095bea76e8bbd0f9b717fd7dc983223e2706605b
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+++ b/Source/core/css/MediaValuesCached.h
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+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MediaValuesCached_h
+#define MediaValuesCached_h
+
+#include "core/css/MediaValues.h"
+
+namespace WebCore {
+
+class MediaValuesCached FINAL : public MediaValues {
+public:
+    struct MediaValuesCachedData {
+        // Members variables must be thread safe, since they're copied to the parser thread
+        int viewportWidth;
+        int viewportHeight;
+        int deviceWidth;
+        int deviceHeight;
+        float devicePixelRatio;
+        int colorBitsPerComponent;
+        int monochromeBitsPerComponent;
+        PointerDeviceType pointer;
+        int defaultFontSize;
+        int computedFontSize;
+        bool threeDEnabled;
+        bool scanMediaType;
+        bool screenMediaType;
+        bool printMediaType;
+        bool strictMode;
+    };
+
+    static PassRefPtr<MediaValues> create(Document&);
+    static PassRefPtr<MediaValues> create(LocalFrame*, RenderStyle*);
+    static PassRefPtr<MediaValues> create(MediaValuesCachedData&);
+    virtual PassRefPtr<MediaValues> copy() const OVERRIDE;
+    virtual bool isSafeToSendToAnotherThread() const OVERRIDE;
+    virtual bool computeLength(double value, unsigned short type, int& result) const OVERRIDE;
+
+    virtual int viewportWidth() const OVERRIDE;
+    virtual int viewportHeight() const OVERRIDE;
+    virtual int deviceWidth() const OVERRIDE;
+    virtual int deviceHeight() const OVERRIDE;
+    virtual float devicePixelRatio() const OVERRIDE;
+    virtual int colorBitsPerComponent() const OVERRIDE;
+    virtual int monochromeBitsPerComponent() const OVERRIDE;
+    virtual PointerDeviceType pointer() const OVERRIDE;
+    virtual bool threeDEnabled() const OVERRIDE;
+    virtual bool scanMediaType() const OVERRIDE;
+    virtual bool screenMediaType() const OVERRIDE;
+    virtual bool printMediaType() const OVERRIDE;
+    virtual bool strictMode() const OVERRIDE;
+    virtual Document* document() const OVERRIDE;
+    virtual bool hasValues() const OVERRIDE;
+
+protected:
+    MediaValuesCached(LocalFrame*, RenderStyle*);
+    MediaValuesCached(const MediaValuesCachedData&);
+
+    MediaValuesCachedData m_data;
+};
+
+} // namespace
+
+#endif // MediaValuesCached_h